# # Data product developed by Dr. E. Thiemann from the # Laboratory for Atmospheric and Space Physics, Boulder, Colorado # in the frame of the PROBA2 guest investigator program. # # Please address your questions to E. Thiemann (thiemann@lasp.colorado.edu) and # to the LYRA Principal Investigator M. Dominique (marie.dominique@oma.be) # # PROBA2 data products are open to all. # Users should however refer to the following paper: http://arxiv.org/abs/1708.08833 # and acknowledge the instrument according to the rules described # at http://proba2.oma.be/data/termsOfUse in their papers and presentations # # Website reference http://proba2.oma.be/lyra/data/EarthAtmosphere/ # # Description: # Summed neutral N2 and O number density profiles, spanning altitudes between 150 and 400 km # retrieved from LYRA data acquired during occultations by the unit 3 (backup unit) zirconium # channel (bandpass: 1-2 nm + 6-20 nm). # # Radial distance is the distance from the center of Earth expressed in km to which the density corresponds. # Density O-N2 provides the summed number density of neutral O and N2 in units of radial distance and cm^-3. # The systematic error is a signed value (asymmetric) in fractional units and is primarily from the error made by # assuming that the absorption cross-sections of O and N2 are equal; a secondary source of systematic error is # from using a single-scale height atmosphere in the reference atmosphere used by the retrieval algorithm. # The random error is an unsigned value (to be applied symmetrically to the measurement) in fractional # units and gathers the uncertainties from solar spectra, solar variability and measurement noise. # Both uncertainties are described in http://arxiv.org/abs/1708.08833. # The Longitude and Latitude (in degrees) columns refer to the tangential point along the # line-of-sight, where most of the absorption occurs. # # Scale height = 59.265317 km # Date (UTC) = 2014-12-27T11:00:14.777 # Date (julian) = 2457018.95850436 # # Radial distance Density O-N2 Systematic error Random error Longitude Latitude 6501.7560 7.3450243e+10 0.052007853 0.032812727 91.167010 30.402909 6504.2793 6.7010534e+10 0.062505674 0.033573623 91.230944 30.279605 6506.8026 6.0434126e+10 0.073193802 0.034334520 91.300254 30.145936 6509.3259 5.4367922e+10 0.084177447 0.035095416 91.367389 30.016461 6511.8492 4.8941992e+10 0.095523018 0.035856312 91.428996 29.897647 6514.3725 4.4393596e+10 0.10736499 0.036617208 91.490603 29.778790 6516.8958 4.0466865e+10 0.11970825 0.037378105 91.552219 29.655558 6519.4191 3.6856948e+10 0.13249028 0.038139001 91.613834 29.532327 6521.9425 3.3572512e+10 0.14570185 0.038899897 91.675443 29.412354 6524.4658 3.0546205e+10 0.15261642 0.039592423 91.737050 29.293539 6526.9891 2.7762222e+10 0.15868411 0.040705003 91.796611 29.174725 6529.5124 2.5232443e+10 0.16293201 0.043051944 91.853821 29.055910 6532.0357 2.2998236e+10 0.16736489 0.046713994 91.911878 28.937095 6534.5590 2.0965623e+10 0.16949320 0.048100926 91.973485 28.818282 6537.0823 1.9184517e+10 0.17095986 0.048724022 92.035092 28.699468 6539.6056 1.7618345e+10 0.17205070 0.050376684 92.092655 28.580639 6542.1289 1.6207653e+10 0.17156326 0.051051176 92.149869 28.461808 6544.6522 1.4805915e+10 0.17072810 0.052173430 92.214922 28.333360 6547.1755 1.3408270e+10 0.16909269 0.053354109 92.284231 28.199692 6549.6988 1.2100386e+10 0.16698022 0.054678432 92.345939 28.075355 6552.2221 1.0953909e+10 0.16480155 0.055530858 92.403148 27.956540 6554.7454 1.0021969e+10 0.16226212 0.054848023 92.460356 27.837726 6557.2687 9.2090013e+09 0.15974178 0.053697662 92.517561 27.718913 6559.7920 8.5005448e+09 0.15694950 0.052297782 92.574767 27.600466 6562.3153 7.8670520e+09 0.15392092 0.050579837 92.631973 27.486052 6564.8387 7.3001914e+09 0.15128246 0.048391519 92.689179 27.371637 6567.3620 6.7868789e+09 0.14910566 0.046311140 92.746393 27.253642 6569.8853 6.3232042e+09 0.14750129 0.044910042 92.803610 27.134812 6572.4086 5.9236865e+09 0.14562641 0.043996176 92.860821 27.015990 6574.9319 5.5487843e+09 0.14342348 0.042407426 92.918026 26.897175 6577.4552 5.1992560e+09 0.14079547 0.039505386 92.977137 26.774406 6579.9785 4.8333723e+09 0.13821185 0.036532577 93.041494 26.640738 6582.5018 4.4794788e+09 0.13580183 0.035157241 93.103006 26.510730 6585.0251 4.1680413e+09 0.13360270 0.033950703 93.155814 26.391915 6587.5484 3.9011102e+09 0.13128288 0.033279876 93.208621 26.273100 6590.0717 3.6754571e+09 0.12868363 0.030928664 93.265720 26.158557 6592.5950 3.4615032e+09 0.12546845 0.027495578 93.322933 26.044128 6595.1183 3.2634911e+09 0.12216620 0.025635842 93.377054 25.926621 6597.6416 3.0838519e+09 0.11872101 0.025520252 93.429862 25.807807 6600.1649 2.9166281e+09 0.11687140 0.025328964 93.484558 25.688992 6602.6882 2.7671056e+09 0.11522232 0.026929311 93.541763 25.570178 6605.2116 2.6276098e+09 0.11383542 0.026842520 93.599315 25.449810 6607.7349 2.4741208e+09 0.11194322 0.024255924 93.658724 25.321092 6610.2582 2.3225300e+09 0.10896294 0.024249650 93.717230 25.193730 6612.7815 2.1798142e+09 0.10746067 0.023736866 93.770038 25.074916 6615.3048 2.0530293e+09 0.10646473 0.023260909 93.822845 24.956103 6617.8281 1.9598654e+09 0.10562053 0.023713798 93.875656 24.841079 6620.3514 1.8661434e+09 0.10504114 0.024880433 93.928467 24.726650 6622.8747 1.7698545e+09 0.10371358 0.024525178 93.985187 24.600825 6625.3980 1.6740128e+09 0.10230359 0.025872541 94.044596 24.467156 6627.9213 1.5718521e+09 0.10059967 0.025672698 94.100227 24.341990 6630.4446 1.4858194e+09 0.099070580 0.025929397 94.153034 24.223176 6632.9679 1.4077949e+09 0.097477886 0.026148407 94.205841 24.105681 6635.4912 1.3365572e+09 0.095724934 0.026473455 94.258645 23.991267 6638.0145 1.2694670e+09 0.094355606 0.025671009 94.311450 23.876853 6640.5378 1.2126026e+09 0.094186006 0.025204847 94.364264 23.762424 6643.0611 1.1607359e+09 0.093640584 0.025201851 94.417079 23.647996 6645.5845 1.1065400e+09 0.092158674 0.025725478 94.471135 23.519034 6648.1078 1.0486578e+09 0.090732231 0.027036418 94.525593 23.385366 6650.6311 9.9210812e+08 0.089662258 0.026399705 94.578837 23.265858 6653.1544 9.4486438e+08 0.088824851 0.027604477 94.631644 23.151444 6655.6777 8.9792194e+08 0.086717104 0.027890233 94.687507 23.028116 6658.2010 8.5464005e+08 0.084593106 0.030417525 94.746912 22.894447 6660.7243 8.0831042e+08 0.082763519 0.032284341 94.801445 22.769309 6663.2476 7.7067777e+08 0.081290654 0.032414598 94.849851 22.654895 6665.7709 7.3859679e+08 0.080960369 0.027283982 94.898259 22.540478 6668.2942 7.0795325e+08 0.080187052 0.027731127 94.946671 22.426049 6670.8175 6.7772328e+08 0.079934014 0.026949892 94.995084 22.311620 6673.3408 6.4418993e+08 0.079550529 0.027968937 95.053376 22.179906 6675.8641 6.1380737e+08 0.077331433 0.031453474 95.112786 22.046238 6678.3874 5.8864538e+08 0.076117210 0.030677483 95.162528 21.929486 6680.9107 5.6863576e+08 0.076801948 0.029638083 95.210935 21.815072 6683.4340 5.4679472e+08 0.077372305 0.031824677 95.263006 21.691989 6685.9573 5.2265855e+08 0.076859199 0.033716035 95.317460 21.563271 6688.4807 4.9822443e+08 0.073832394 0.033896142 95.368369 21.442937 6691.0040 4.7809077e+08 0.072184600 0.033000328 95.416775 21.328523 6693.5273 4.6048135e+08 0.071029526 0.031423203 95.467080 21.209622 6696.0506 4.4194384e+08 0.070584635 0.029696798 95.521538 21.080904 6698.5739 4.2108264e+08 0.069365966 0.031005534 95.575998 20.952181 6701.0972 3.9671642e+08 0.067296777 0.031552047 95.630464 20.823444 6703.6205 3.7647352e+08 0.067082978 0.035227905 95.683268 20.697427 6706.1438 3.5954139e+08 0.067009977 0.038696675 95.731675 20.578613 6708.6671 3.4949508e+08 0.066282316 0.040770032 95.780114 20.459743 6711.1904 3.4124726e+08 0.064169797 0.040908868 95.834549 20.331064 6713.7137 3.2890990e+08 0.061570415 0.046267986 95.889007 20.202347 6716.2370 3.1337276e+08 0.059447657 0.048750473 95.943465 20.073629 6718.7603 2.9428996e+08 0.056898244 0.050996570 95.997922 19.944911 6721.2836 2.7970809e+08 0.057200741 0.050389360 96.046559 19.829952 6723.8069 2.7299088e+08 0.055436903 0.049818989 96.094965 19.715538 6726.3302 2.6622086e+08 0.051287661 0.040954346 96.144130 19.591263 6728.8536 2.5943905e+08 0.050672225 0.040837866 96.193636 19.462546 6731.3769 2.4645522e+08 0.048749073 0.042500046 96.246457 19.337142 6733.9002 2.3081544e+08 0.047522502 0.048811573 96.300915 19.213374 6736.4235 2.2086850e+08 0.049459171 0.051955969 96.352161 19.086379 6738.9468 2.1093080e+08 0.050568402 0.062533543 96.401675 18.957642 6741.4701 2.0186647e+08 0.048933859 0.067099400 96.454303 18.828917 6743.9934 1.9240470e+08 0.043746669 0.077748827 96.508760 18.700199 6746.5167 1.8421689e+08 0.040556547 0.072980098 96.556842 18.580207 6749.0400 1.7843912e+08 0.038489116 0.072266980 96.600846 18.465793 6751.5633 1.7352074e+08 0.034301410 0.073949841 96.648379 18.346551 6754.0866 1.6621184e+08 0.032127139 0.076074183 96.702837 18.217834 6756.6099 1.5902349e+08 0.029043953 0.075736327 96.755722 18.089116 6759.1332 1.5126993e+08 0.029533956 0.075852104 96.805228 17.960399 6761.6565 1.4775680e+08 0.031979199 0.078022467 96.854736 17.833155 6764.1798 1.4260058e+08 0.036143892 0.079491901 96.904245 17.709388 6766.7031 1.3712199e+08 0.036933670 0.081304277 96.955130 17.584246 6769.2265 1.3269628e+08 0.031586538 0.085003507 97.009587 17.455528 6771.7498 1.2626046e+08 0.026884801 0.091123634 97.062770 17.326806 6774.2731 1.2330548e+08 0.022195063 0.097243761 97.112284 17.198069 6776.7964 1.2007624e+08 0.017538686 0.10336389 97.163480 17.066303 6779.3197 1.1551071e+08 0.012901388 0.10948401 97.220060 16.924852 6781.8430 1.1070980e+08 0.0082590477 0.11560414 97.273309 16.789396 6784.3663 1.0236718e+08 0.0036000855 0.12172427 97.322815 16.660678 6786.8896 97290552. -0.0010613910 0.12784439 97.372321 16.531960 6789.4129 91070367. -0.0057387185 0.13396452 97.421827 16.403242 6791.9362 88866412. -0.010382160 0.14008465 97.471335 16.276658 6794.4595 88476945. -0.014991981 0.14620477 97.520845 16.152891 6796.9828 83811533. -0.019671472 0.15232490 97.570353 16.027089 6799.5061 80888661. -0.024322436 0.15844503 97.619859 15.898371 6802.0294 78403227. -0.028975634 0.16456515 97.672132 15.764673 6804.5527 74253379. -0.033684738 0.17068528 97.728712 15.623221 6807.0760 73269382. -0.038307269 0.17680541 97.777791 15.489713 6809.5994 70198809. -0.043031202 0.18292554 97.822345 15.360995 6812.1227 64911741. -0.047919985 0.18904566 97.874163 15.224589 6814.6460 63743840. -0.052669412 0.19516579 97.930747 15.083138 6817.1693 59791595. -0.057716794 0.20128592 97.981410 14.952338 6819.6926 57047059. -0.062896369 0.20740604 98.030916 14.823620 6822.2159 55115820. -0.068368462 0.21352617 98.086198 14.684506 6824.7392 53088960. -0.074547014 0.21964630 98.142187 14.543923 6827.2625 51417546. -0.082902241 0.22576642 98.186745 14.420156 6829.7858 49722687. -0.11014107 0.23188655 98.231655 14.295707 6832.3091 47438935. -0.096098560 0.23800668 98.288234 14.148598 6834.8324 45453071. -0.056937124 0.24412680 98.341666 14.007599